Promotion of the self-renewal capacity of human leukemia cells by sonic hedgehog protein

Hedgehog (Hh) signaling is involved in cancer cell growth. However, the effects of Hh stimulation on leukemia cells are unknown. The effects of recombinant sonic Hedgehog (Shh) protein on the in vitro growth of one B-lymphoma and four myeloid leukemia cell lines were examined. Shh stimulation had no...

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Published in:Anticancer research 2011-03, Vol.31 (3), p.781-784
Main Authors: Kawaguchi-Ihara, Noriko, Okuhashi, Yuki, Itoh, Mai, Murohashi, Ikuo, Nara, Nobuo, Tohda, Shuji
Format: Article
Language:English
Subjects:
Animals
Cell Line, Tumor
Cell Proliferation - drug effects
Cell Shape - drug effects
Clone Cells
Gene Expression Regulation, Leukemic - drug effects
Hedgehog Proteins - pharmacology
Humans
Leukemia - genetics
Leukemia - pathology
Lymphoma - pathology
Mice
Reverse Transcriptase Polymerase Chain Reaction
Time Factors
Tumor Stem Cell Assay
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container_start_page 781
container_title Anticancer research
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creator Kawaguchi-Ihara, Noriko
Okuhashi, Yuki
Itoh, Mai
Murohashi, Ikuo
Nara, Nobuo
Tohda, Shuji
description Hedgehog (Hh) signaling is involved in cancer cell growth. However, the effects of Hh stimulation on leukemia cells are unknown. The effects of recombinant sonic Hedgehog (Shh) protein on the in vitro growth of one B-lymphoma and four myeloid leukemia cell lines were examined. Shh stimulation had no significant effect on the short-term growth of whole cell populations in any of the five cell lines. However, Shh promoted clonogenic cell recovery after suspension culture, suggesting promotion of leukemia stem or progenitor cell amplification in three cell lines. The lack of Hh receptors in one cell line and endogenous Shh expression in another were possible reasons for the lack of effects of Shh in these cases. These results suggest that Shh stimulation promotes the self-renewal capacity of leukemia stem cells in some cell lines. Inhibition of Hh signaling could represent a novel therapeutic approach in leukemia.
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subjects Animals
Cell Line, Tumor
Cell Proliferation - drug effects
Cell Shape - drug effects
Clone Cells
Gene Expression Regulation, Leukemic - drug effects
Hedgehog Proteins - pharmacology
Humans
Leukemia - genetics
Leukemia - pathology
Lymphoma - pathology
Mice
Reverse Transcriptase Polymerase Chain Reaction
Time Factors
Tumor Stem Cell Assay
title Promotion of the self-renewal capacity of human leukemia cells by sonic hedgehog protein
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